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IMPROVEMENT IN PLIISRS.

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Be it known that I, A. M. OLDs, of the city, county, and .State of New York, have invented a new and useful Improved Pliers, and I do hereby declare that the following is a full, clear, and exact description of the operation and construction of the same, reference being had to the accompanying drawings, which make a part of this specification, in whichy Figure I is an elevation, showing the pliers shut.

Figure II, a view in the same plane as Fig. I, but showing the position of the handles and the arm c, when the pliers are open.

Figure III, view in a plane at right angles to that of Fig. II, showing the position of the jaws of the pliers when open.

Figure IV, lateral view of the short movable jaw of the pliers.

Figure V, view of the segmental spiral arm, forming the extremity of the movable handle ofthe pliers, and working transversely through the orifice in the jaws, causing them to lopen and shut, 'and also serving as a pivot. j f

Figure VI, view of the und'er side of the movable jaw of the pliers, in pla-ne at right angles to that of Fig. IV,

l Ezplanatz'on of Figures.

a, long arm of the pliers, containing in one piece one of the handles and one of the jaws, each working in plane at right angles to that of the other. a', the short arm of the pliers, working in same plane with the handle ofthe arm a about a pivot, and terminating at, its shorter extremity in the segmental spiral arm c. b, the short or-movable jaw pf pliers, tting'at one end by mortise work into the jaw of the stationary arm a, and made to open and shut by meansof the segmentalspiral arm L', which works through it. ,'the segmental spiral arm, forming the shorter extremity of the arm a', working in the same plane as the handles a and a', but transversely through the jaws, passing through an orifice in the short jaw Zz, in which it fits exactly, and through a circular or oval orifice in the jaw on the arm a, of suihcient diameter to allow it to revolve, but yet prevent its slipping out of place. j', orifice in the movable jaw b, in which the arm c'iits, and through which it works.

Construction and Operation.

.The improved pliers constructed as described, operate as follows: When the pliers are shut, the segn mental arme passes through lthe jaws of the pliers, protruding some distance beyond. In this position the flat side of the armA c, at the point where it passes through Z, lies in a plane parallel to the face of 'the jaw of vthe arm a, and the jaw b being fitted to the arm c by the elongated' hole f, lies in the same direction with it, and'shuts against the jaw of the arm a, andthe arm c thus holds the pliers irmly shut. As the handles of the implement are opened, the arm c is drawn partly through the orifices in thejaws. Being, however, made of a curved or segmental shape, it continues to hold the same relative position,perpendicular, or nearly so; to the plane in which the jaws work, and thus moves easily through them. vBut the arm c, besides being curved vertically, is twisted, so to speak, laterally, in such a mannerthat its edge assumes a spiral position; and as it passes through the orifice in the jaws, the movable jaw b, fitting to it, follows the direction of its spiral edges, and as the hat side of the arm e changes its plane, the jaw?) correspondingly changes its position and the direction of its face, and stands open, or at an angle with the other jaw. The orice in the jawof the arm ais of such size and shape as to allow the arm cto pass through it in its spiral motion, but to prevent any other lateral movement; the arm c being thus made to act as a pivot for the two jaws. On shutting the handles of thepliers the process is reversed, and b is again-brought parallel to and into contact with the othefjaws. O11 opening the handles to the full extent, as in Fig. II, the arm c is withdrawn wholly from the jaw b, which may be taken out and a jaw of any otherdescription, c. g., round, cutting, &c.,\inserted in lieu thereof.. The great advantage of this contrivance is that the pliers having been opened to any desiredextent, remain in that position even though the pressure on the handles be removed. Thus, when any object has been grasped, itis held as in a vise, though the pressure of the hand ceases, and the pliers may belaid aside, still firmly holding the object.

Y Claim.

What I claim as my invention, and desire to secure by Lettersl atenh'is--e- The combination of the handles, segmental spiral arm, and movable jaw, substantially as arranged and described. i

A. -M. OLDS.`

Witnesses:y

Cms. MoanrLL, Nara. A. Pasantes.- 

